I don't know if the developers/owners ever read the forums but I played on minetime's skyblock back in its 2014-2015 hay day, and what made it so special was its lack of filler. It was (I believe) the second most popular game mode behind prison, and the experience of playing on this server's skyblock in particular was so different compared to other servers, and I think that is what made it so popular. When it returns I hope that they go back to the beginning with the original spawn area and hopefully the old shop system too? The recent one they had only let you make 5 chests and that ruined the experience for me.